SS FILLER

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Elavarasan Mech

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Apr 23, 2025, 7:28:22 AM4/23/25
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Dear All 
 Please clarify below 

we have qualified WPS( P No 8 GR 1 To P NO 8 GR 1). Filler metal Er 316l ( Fno:6)
 
In our current project UNS S31254 ( PNO 8 Gr No 4)
We useing a filler wire ER2594 (Fno 6 )


Can we use above wps for this project with filler metal ER2594  Please guide me 
CODE ASME SEC IX 





regards 
ELAVARASAN

venkateswara reddy Desireddy

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Apr 23, 2025, 9:02:07 AM4/23/25
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If essential variables doesn't change , and impact not applicable, then you can use WPS.



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Akhilesh Kumar

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Apr 23, 2025, 11:53:50 AM4/23/25
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Greeting to All of you! 

Could you please confirm if the P-No.-8  Group1 material (ASTM A316L) WPS can use for P.-No.-8 Group4 material (ASTM A312) 

Please confirm or required due to group. 

Thank You! 
With Regards, 
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sridhar cn

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Apr 23, 2025, 11:53:56 AM4/23/25
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 Dear Mr. Elavarasan, 

Since your earlier WPS is qualified for P No 8 Gr 1 base metal with ER316L filler (F6), and your current 

project base metal is UNS S31254 (P No 8 Gr 4) with ER2594 filler (also F6 but different alloy), you 

cannot directly use the existing WPS for this project without requalification.

 

The change in base metal group (Gr 4) and filler metal alloy composition is an essential variable requiring 

a new WPS and PQR qualification as per ASME Section IX.

 

You should prepare and qualify a new WPS using UNS S31254 base metal and ER2594 filler metal to align 

with ASME Sec IX requirements and ensure weld integrity.

 

C Sridhar.

 

 


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james gerald

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Apr 23, 2025, 11:54:04 AM4/23/25
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UNS 312254 falls under the category of Super Austenitic stainless steel and commonly know as 6Mo alloy or 254SMO.

The Filler wire you are using ER 2594 is not correct and it  is for Super Duplex stainless steel with alloying ellements on lower side.

The correct Filler metal to weld UNS 31254 is  ERNicrMo3 for which the F-No is 43 and hence you cannot use the existing WPS.

Thanks & Regards

J.Gerald Jayakumar

0091-8838619635



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Vishwas Keskar

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Apr 23, 2025, 11:33:32 PM4/23/25
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The plate designation seems to be wrong
UNS 312254
The designation shall be 
SA 240 UNS 31254
Pl correct if I am wrong .
Pl mention what is service process application ?
For TYP31254 , ERNiCRMo10 shall be used if PREN  required is higher and pitting corrosion is prime requirement 
Vishwas
9823472273
IWE

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On 23 Apr 2025, at 9:23 PM, 'james gerald' via Materials & Welding <material...@googlegroups.com> wrote:



james gerald

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Apr 23, 2025, 11:57:56 PM4/23/25
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It is a typo error as was mentioned correctly in the last line.

Thanks & Regards

J.Gerald Jayakumar

0091-8838619635

Elavarasan Mech

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Apr 24, 2025, 8:34:02 AM4/24/25
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Our project SA182 F44 ,S31254 

ELA


On Wed, 23 Apr 2025 at 7:53 PM Akhilesh Kumar <akhile...@gmail.com> wrote:
Greeting to All of you! 

Could you please confirm if the P-No.-8  Group1 material (ASTM A316L) WPS can use for P.-No.-8 Group4 material (ASTM A312) 

Please confirm or required due to group. 

Thank You! 
With Regards, 


On Wednesday, April 23, 2025, Elavarasan Mech <elavaras...@gmail.com> wrote:
Dear All 
 Please clarify below 

we have qualified WPS( P No 8 GR 1 To P NO 8 GR 1). Filler metal Er 316l ( Fno:6)
 
In our current project UNS S31254 ( PNO 8 Gr No 4)
We useing a filler wire ER2594 (Fno 6 )


Can we use above wps for this project with filler metal ER2594  Please guide me 
CODE ASME SEC IX 





regards 
ELAVARASAN

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james gerald

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Apr 24, 2025, 9:43:14 AM4/24/25
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I suppose Mr. Viswas is looking for the process details. Normally these materials are used in Refinery & Petrochemical plants.

1. If it is a Pressure equipment check in the design data sheet.
2. If it is a piping, then get the piping class from ISO dwg and refer in Piping material specification for the process fluid such as nitric acid etc..

Thanks & Regards

J.Gerald Jayakumar

0091-8838619635

james gerald

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Apr 24, 2025, 9:43:21 AM4/24/25
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Just to add, material suitability for Nitric acid environment from corrosion table.

Inline image


Thanks & Regards

J.Gerald Jayakumar

0091-8838619635

On Thursday 24 April, 2025 at 06:03:51 pm IST, Elavarasan Mech <elavaras...@gmail.com> wrote:


Vinay

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Apr 26, 2025, 11:44:53 AM4/26/25
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agree

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Kannayeram Gnanapandithan

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Apr 29, 2025, 10:57:02 AM4/29/25
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pl check Ano for ur new welding consumable.

THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE,  CSWIP 3.1,
ISO 9712 Level 2 in VT,
ASNT-Level II in PT,MT,RT & UT,
LA ISO 9001-2015, ISO 3834, EN 15085, 
International Welding Engineer. 
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349


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Muhammad Babar Ghauri

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Apr 30, 2025, 4:54:24 AM4/30/25
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Dear Elavarasan Mech,

For SA-312 UNS S31254 (Super Austenitic Stainless Steel), ErNiCrMo-3 is often a better choice of filler wire compared to ER2594. While ASME Section IX does not provide straightforward rules for filler wire selection, it is essential to rely on manufacturer recommendations or consult welding consumable catalogs for guidance. Additionally, a summarized electrode selection table, reflecting current industrial practices, is available in API 582.


Regards,
Babar Ghauri
Sr. Welding Engineer


Parminder Singh

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Apr 30, 2025, 9:34:18 AM4/30/25
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UNS S31254 ( PNO 8 Gr No 4) is 6% Moly and 18% Ni
Filler wire ER2594 (Fno 6 ) is 4% Moly and 10% Ni

So cannot use 

Use Er NiCrMo-3 instead. Its F No. is 43 

So need to Re-qualify 

Thanks 


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Mohd Siraj

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May 15, 2025, 9:45:27 AM5/15/25
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dear ,

pl check A number and Gas composition use for ss cant be sutibale same % for duplex., u need to qualified with aditional testing of ferrite.

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